fix services to internal

Reviewed-by: Gode, Sebastian <sebastian.gode@t-systems.com>
Co-authored-by: tischrei <tino.schreiber@t-systems.com>
Co-committed-by: tischrei <tino.schreiber@t-systems.com>

otc_metadata/data/services.yaml

@@ -1595,7 +1595,7 @@ services:
     service_title: Enterprise Router
     service_type: er
     service_uri: enterprise-router
-    environment: public
+    environment: internal
     teams:
       - name: docs-network-rw
         permission: write
@@ -1775,7 +1775,7 @@ services:
     service_title: GaussDB (openGauss)
     service_type: opengauss
     service_uri: gaussdb-opengauss
-    environment: public
+    environment: internal
     teams:
       - name: docs-database-rw
         permission: write
@@ -2030,7 +2030,7 @@ services:
     service_title: Dedicated Web Application Firewall
     service_type: wafd
     service_uri: web-application-firewall-dedicated
-    environment: public
+    environment: internal
     teams:
       - name: docs-security-services-rw
         permission: write